A few years ago I saw on TV that some scientists had a theory that at least once and maybe twice in the far past earth has gotten so cold that it was completely encased in ice like some of the moons around the outer planets. I am now seeing that the theory is being treated as established fact but without any explanation of the irrefutable evidence that has moved the theory's status to that of being proved. So, what is the new evidence that this event happened?Bob DeWoody

My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events.

I don't know what 'new' evidence there might be but a "snowball Earth" is a known stable state for our climate and you can crash into that on occasion with the climate simulations for ClimatePrediction.net

Naturally increasing CO2 is important for 'turbo-boosting' us out of such cold conditions. Note that that is not to be confused with the very un-natural increasing CO2 that we are forcing today with our global industrialization.

Keep searchin',
MartinSee new freedom: Mageia5
See & try out for yourself: Linux Voice
The Future is what We all make IT (GPLv3)

A few years ago I saw on TV that some scientists had a theory that at least once and maybe twice in the far past earth has gotten so cold that it was completely encased in ice like some of the moons around the outer planets. I am now seeing that the theory is being treated as established fact but without any explanation of the irrefutable evidence that has moved the theory's status to that of being proved. So, what is the new evidence that this event happened?

Good point Bob...I know the last biggie reached as far as Africa and reduced
the world population down to about half a million, but I suspect this latter
part, population reduction, was pure speculation as it could not be proved.The Kite Fliers

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Kite fliers: An imaginary club of solo members, those who don't yet
belong to a formal team so "fly their own kites" - as the saying goes.

I don't know what 'new' evidence there might be but a "snowball Earth" is a known stable state for our climate and you can crash into that on occasion with the climate simulations for ClimatePrediction.net

Naturally increasing CO2 is important for 'turbo-boosting' us out of such cold conditions. Note that that is not to be confused with the very un-natural increasing CO2 that we are forcing today with our global industrialization.

Keep searchin',
Martin

I'm sorry but I don't regard computer simulations as proof of such a significant event. There is no way at this time that programmers could factor in every possible component of global weather and I also have a feeling that supporters of such theories tend to only use data that supports the theory they are trying to simulate.Bob DeWoody

My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events.